Perpetual, mechanical , self-winding , with a magnetic shield to protect the movement

Caliber

3131, Manufacture Rolex

Power Reserve

Approximately 48 hours

Bracelet

Oyster, flat three-piece links

Dial

Black

Certification

Superlative Chronometer (COSC + Rolex certification after casing)

The ROLEX Milgauss

THE SCIENTIST'S WATCH

The reliability and precision of an ordinary mechanical watch can be affected by a magnetic field of 50 to 100 gauss. But many scientists are exposed to much higher magnetic fields during the course of their work. Rolex's solution was the Rolex Milgauss, created in 1956, and resistant to 1000 gauss. Hence the name of the watch, mille being French for thousand.